Citrus
Citrus production can be divided among four primary groups: sweet oranges, mandarins (also known as tangerines), grapefruit, and lemons and limes. Citrus production takes place throughout the tropical and sub-tropical countries of the world. Orange juice is the largest fruit juice product consumed in the world with important markets for grapefruit and lemon juice.
Special considerations for citrus
Citrus orchards are typically high yielding and need to be supported with high fertiliser inputs, specifically nitrogen fertiliser. Importantly, both under and over fertilising can cause issues with yield and quality, so regularly leaf testing of nutrient levels is common practice.
Each variety will have specific nutrition needs, however in all cases a balanced supply of macro and micronutrients is required to optimise yield, maturation and quality. Citrus trees require well-draining soils and given their nutrient needs soils that hold, cycle, and supply nutrients, as required by the tree. The BioAg citrus program provides a range of phosphorus and potassium fertilisers as well as soil biostimulants that improve nutrient cycling and soil agglomeration (improving drainage), and foliar biostimulants that support plant physiological process during periods of abiotic stress (hot or cold temperatures), and are a natural chelator of micronutrients improving absorption and translocation in the plant.
The BioAg approach
BioAg nutrition programs are incorporated into a growers current nutrition program. Our objective is to make fertiliser and other inputs work better and build and support healthy and balanced soils and plants. Programs are custom-made for each block, using advanced soil and tissue analysis. These integrated programs typically incorporate a range of BioAg solid and liquid nutrients, often associated with conventional inputs. BioAg fertility programs can be developed to meet organic certification requirements.
Soil test
An experienced and Fertcare accredited BioAg agronomist works with you and provides technical expertise on your crop. If you don’t already have recent soil test data, we arrange a soil test for you. The results provide essential information about the soil fertility and soil structure for better performance. Download the BioAg soil sampling procedure here.
A tailored program
Based on the results of soil tests, crop requirements and other factors such as soil structure, climate, history of the block, and targets that you are trying to achieve, we provide a tailored program that aims to improve soil fertility and maximise yield response. We support you through the program to ensure that inputs are applied at the right time, in the right way.
Leaf and tissue testing
Any nutritional program cannot foresee the changes in weather, disease, or pests, that may impact a crop. During the season, growers may observe issues or evidence of stress in their crop. This may be due to greater growth or yields than planned, a trace element shortage or abiotic stresses. An on-farm inspection and associated leaf or tissue tests will promptly identify any issues, which can quickly be addressed by applying the appropriate inputs. Download the BioAg leaf sampling procedure here.
High yielding crops require fertile balanced soils
Key to highly productive crops is the function of soils. Soil structure, chemistry and biology are critical in supporting crops throughout the growing season. By improving all aspects of the soil, crops will benefit from improved access to moisture, due to improved infiltration and water holding capacity, improved access to nutrition through improved nutrient cycling, fixation (for N) and a reduction in loss pathways, improved resilience to abiotic stresses and disease, improved root growth providing access to additional moisture and nutrients as well as improved carbon sequestration and a range of other benefits (click for more on soil health).
Beneficial microorganisms stimulate the plant’s root growth and help protect it from abiotic stresses. This is made possible through mutually beneficial relationships that microbes develop with plants, for example mycorrhizal associations. BioAg products programs supply essential macronutrients (N, P, K, S, Ca), trace elements (B, Zn, Cu etc.), microbial food and metabolites beneficial microorganisms that colonise root systems, improving soil function, plant health and productivity.
Citrus– key features of a BioAg program
The following table illustrates the cropping process and potential solutions depending on soil test results and other contributing factors. Call your BioAg Area Manager to discuss your individual needs.
Citrus resources
- Biostimulants increase yield benefits
The yield map from the Summer 2023 harvest near Brocklesby in Southern NSW visibly shows the positive impact of BioAg’s biostimulant program on yield.
- When Less is Best – for your crops and your hip-pocket
Do you sometimes feel like you’re going a little insane? Applying more and more synthetic fertiliser to boost yield because that’s what everyone else does, yet your efforts and skyrocketing input costs result in either no yield improvement or even declining yield, and s...
- Citrus case study, Griffith NSW
Woodside Marketing is a family-owned national enterprise based in Griffith NSW. Its experience in farming fruit and vegetables spans three generations of the Vardanega family commencing with the arrival to Australia in 1912 of Girolamo Vardanega from Treviso Italy. Gran...
- Post-harvest – a key period for orchards and vineyards
Post-harvest is an important period for perennial tree crops and vines. This is when carbohydrates and nutrient reserves (like nitrogen) are replenished prior to dormancy. These reserves are then used at bud or flower burst and the start of the next season. Post-harvest...
Recommended products
BioAgPhos
Solid Fertiliser
Highly reactive phosphate fertiliser made from high-grade reactive phosphate rock combined with BioAg’s microbial digesting agent.
Soil & Seed
Biostimulant
Formulated to improve soil microbial activity, natural soil fertility and moisture and nutrient utilisation.
Balance & Grow
Biostimulant
Formulated to increase vegetative growth, root development and soil microbial activity. Ideal for broadacre, pastures and horticulture.
Fruit & Balance
Biostimulant
Formulated to increase flowering, fruit set and soil microbial activity. Fruit & Balance enhances the nutritional value and quality of fruit or grain by increasing plant sugar levels.
BioAgSoP
Solid Fertiliser
Organically certified granular form of fertiliser containing potassium and sulphur. Immediately available to crops and plants. Ideal for crops with a high potassium demand and sensitive to chloride.
Committed to organics
With a core range of natural fertilisers and biostimulants, BioAg can offer an extensive range of products certified by Australian Organics, suitable for use in organic systems.